Denture



Ap. 10, 1923..y

H. M. CARROLL. SR

Fled NOV: 13, 1922 Patented Apr. 10, 1923.

UNITED STATES HOUSTON MUNROE CARROLL,

sa., orV SAN ANTONIO, Taxes.

DENTURE.

l Application led November To all whom t may concern.'

Be 1t known that I, HOUSTON M. CARROLL,

Sr., a citizen of the United States residing at. San Antonio, in the county o-f Bexar and State of Texas,have invented a new and useful Denture, ofwhichthe following is a Specification.

This invention aims to provide a novel retainer for a lower plate of teeth, the retainer being so constructed that it will present a grinding surface, and serve as a tooth, as well as a retainer.

It is within the province of the disclosure to improve generally and to enhance the uti-lity of devices of that type to which the invention appert-ains.

With the abo-ve and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed` it being understood that, within the scope of what is claimed, changes inthe precise embodiment of the invention shown can be made without departing from the spirit of the invention. v

In the accompanying drawings Figure l Shows in top plan, a deviceconstructed in accordance with the invention; Figure 2 is a fragmentalside elevation; ure 3 is a cross section', and Figure t is a plan disclosing the lower surface of the combined retainer andv tooth.

In the drawings, the numeral l marks a plate or` carrier, of arched form,` and made of gutta-percha or any other substance ordinarily used in dental work` the lower surface of the plate 1 being` shaped, as at 2 in the common and well kno-wn way, to provide the necessary seat for the plate. Teeth 3 are mounted on kthe plate l. Any suitablemeans may be provided for attaching to the plate, the combined retainer and tooth whichforms thesubject matter ofthis V application. If the retainer and tooth is to be applied to a set of teeth already made, it may be expedient to cut away the plate or carrier l, at its'rear end, andon its upper surface, as shown at 4t to receive a layer 5 of material which, crenerally, is the same out of whichv the plate 1 is made. The layer 5 of material extends horizontally, as at 6, across the upper surface of the carrier l at the rear end thereof, and extends downwardly along the side of the plate or car- 13, 1922. Serial N0. 600,590.

rier l, at the outside thereof, as denoted by the numeral 7.

A combined retainer and tooth 8 is provided,y and has a grinding surface 9. The retainer and tooth 8 includes an upstanding, outwardly extended projection l0, beneath which the part Of the layer 6 extends, in order to sustain the retainer and tooth, the lower surface of the member 8 being roughened, as indicated at l1 to secure a rm hold in the part 6 of the layer 5, whilst the same is in a plastic condition.

The element 8 exercises a double function, in that it causes the rearmost tooth on the plate to act as a retainer. The part 8 is easy rto adjust on any plate which is worn, a portion of the back part of the plate being removed, as hereinbefore explainech.

and the combined 'retainer and tooth being mounted in place, the full 'grinding surface of the set being retained and, in some instances, an increased grinding surface being secured, since the element may be placed further back than is the ordinary` artificial tooth'. The involuntary contractions r of the muscles of the mouth in the act'of v inasticating food, cooperate with the re-` tainer, and aid in holding the plate in place.y The retainer 8 may be made of any suitable substance which can be worn without injury to the health of the patient, gold, aluminum or porcelain being suggested.

Having thus described the invention, what is claimed is l. In a device of the class described. a lower set of artificial teeth provided at its rear end with a laterally prolonged retainer having a grinding surface.

2. In a device of the class described. a

lower set of artificialv teeth comprising a H' plate; a combined retainer and tooth coacting with the rear portion of the plate and having a grinding surface, the retainer and tooth including a laterally projecting part; and means for securing the retainer and tooth to the plate, said means being extended beneath said part.

In testimony that I claim the foregoing as Vmy own, I have hereto aiiixed my signature in the presence of two witnesses.

HOUSTON MUNRGE CARROLL, Si'.

Witnesses: i

H. M. CARROLL, Jr., C. R, VDAIRLES, 

